After frequent player requests, the free SFW version:

https://steamoss.com/steamstore/app/3330280/Free_Solitaire/

Differences:

• SFW title and icon
  
• all adult content removed
  
• puzzles removed
  
• sex-themed variants removed, so it's only about 120 of them there

You can still create card sets with the in-built editor and customize everything.

Since it's a different and technically unrelated app on Steam, your progress and achievements here won't be transferred to that app.

Max achievement still requires you to win 100 variants. There are fewer than 20 in total that have "very low" chance of winning. So, just skip those and you should be fine to 100% with a reasonable effort.

I'm not sure if achievements there will show on your Steam profile and elsewhere, as, AFAIK, Steam doesn't show them in some places if the app is completely free. I'm not sure if DLCs influence that.

Each app uses separate custom content folders. So, if you created card sets here and want to use them in the SFW app, you'll need to manually copy the files between the folders. To browse to those folders, in Options->Advanced scroll to the very bottom for the buttons Your card sets and the like.

I have a kind request: if you review that app, please don't mention this NSFW version. I expect kids and moms to play that game, so it's best they don't see references to inappropriate material. Even if their Steam settings wouldn't allow them to open this NSFW game listing. Even if you, like myself, think that NSFW is the best and who on Earth would need SFW anyways :)

That's also why I used dev name WMGames instead my adult-sounding wittyminx there. May the porn stay completely separate to keep everyone happy.

Thank you for your understanding!

About monetization: that app is free and will be free. I didn't expect to monetize it and have no clear plan for it. I'm simply trying to fulfil a popular request to accommodate for players in various situations. I might add paid DLCs (e.g. some big SFW card sets packs) if there is enough interest in that game.

Thank you for your support and thank you for playing!